A couple hammer blows to the head would also cause "an interruption, cessation, or disorder of a body, system, or organ structure or function," but that does not make it a disease. If you hammer your brain/body with a toxin repeadetly, you will invariably damage it. That wonderful buzz comes with a price, and the bill eventually comes due -- with accrued interest.
Kanamit posted this video from LifeRing's Martin Nicolaus, which covers how the alcohol industry saw an opportunity to shield itself from regulation by funding the promotion of the disease concept. They didn't invent it, since it predates even AA, but they were certainly astute in seeing how it would help them. Still working for them today, which is why, unlike the tobacco industry, they are free to advertise at will, without those pesky warning labels.
LifeRing Video